Statements involving larger tables and joins of two or more tables are more likely to exhibit a change in query access plan as a result of the improved cardinality estimate.

如果语句涉及到更大的表格和两个或者更多个表的连接的话，查询访问计划就很可能会因为基数估计值的提高而改变。

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Referential integrity is a fancy SQL term that refers to keeping all the data in your database clean, free from incorrect or unused data, and accurate in terms of joins across tables.

引用完整性是一个美妙的sql术语，它指的是保持数据库中的所有数据都是干净的，没有错误或者多余的数据，表之间的连接准确合理。

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If the optimizer joins two tables first, the join results could be huge and may use a large amount of system resources such as CPU and memory.

如果优化器首先连接两个表，那么连接结果可能十分庞大，并可能使用大量系统资源，如CPU和内存。

youdao

In a relational database, this would probably involve several tables and joins.

FORBES: What You Need to Know About NoSQL Databases

But when you need to optimize performance, you look at the queries you actually perform, then merge tables to create longer rows, and do away with joins wherever possible.

FORBES: What You Need to Know About NoSQL Databases

The Commonwealth Scientific and Industrial Research Organization (CSIRO) created the table (or should we say, "tables") to showcase the "power of advanced networking" and joins a host of other wild ways to get your game on.

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